DC Connector 2.1*5.5 5.5*2.5MM Power Jack DC Power Jack Plug Conector Female Plug Jack Male Plug Jack for DIY Cctv Accessories
https://www.vogueparade.com/shopping/EN/4003/5/1005002590208848/dc-connector-2155-5525mm-power-jack-dc-power-jack-plug-conector-female-plug-jack-male-plug-jack-for-diy-cctv-accessories//